Buy the Ninja Professional Plus DUO (BN751) if you want the larger pitcher, Auto-iQ presets on both vessels, and a manufacturer that publishes a continuous wattage you can actually compare. Buy the NutriBullet 1200 W Combo if you want the same one-base-two-jobs idea for less money, backed by the largest replacement-parts ecosystem in the category. Both are one-year machines that cover a family pitcher and single-serve cups with a single motor.
This is the most direct comparison in the batch, because the two machines set out to do the identical thing: replace a full-size blender and a bullet blender with one base and one footprint. So the decision comes down to pitcher size, presets, how each brand publishes its wattage, and price.
The two machines, side by side
Manufacturer figures. Ninja publishes 1,200 W continuous and 1,400 W peak; NutriBullet publishes 1,200 W with no qualifier — comparable in the everyday sense, but Ninja is the one stating what the motor draws in use. Running cost is computed, not measured. | Ninja Professional Plus DUO BN751 | NutriBullet 1200 W Blender Combo |
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| Published motor | 1,200 W continuous; 1,400 W peak | 1,200 W (no qualifier) |
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| Pitcher | 72 oz total, 64 oz max liquid | 64 oz pitcher |
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| Cups | Single-serve cups with drinking lid | 32 oz cup and 24 oz handled cup |
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| Presets | Auto-iQ on both vessels | None — manual |
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| Warranty | 1 year limited | 1 year (excludes cups) |
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| Est. cost to run / year | $3.82 | $3.82 |
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Running cost is identical — both draw 1,200 watts, both cost about $3.82 a year to run — and the warranty is a tie at one year. So ignore those two rows entirely; the decision lives in the pitcher, the presets and the price.
Where they genuinely differ
Pitcher size and presets
The Ninja’s pitcher is 72 oz total against the NutriBullet’s 64, and its Auto-iQ programs run on both the pitcher and the cups — they stop on their own, which matters more than it sounds when you are doing something else. The NutriBullet Combo is manual: you control it, which some people prefer and others find a small daily chore. If you like walking away mid-blend, the Ninja is the one with that feature.
How each states its power
Both publish 1,200 watts, but only Ninja separates continuous from peak — it prints 1,200 continuous and 1,400 peak, which makes its motor genuinely comparable to other machines. NutriBullet publishes a single unqualified 1,200 W figure. In everyday terms they are matched; in specification terms, Ninja is the one telling you what the motor actually draws in use.
Price and parts
The NutriBullet Combo typically undercuts the Ninja DUO, and its cups and blades are the standard NutriBullet parts sold everywhere. If the lowest price for a pitcher-plus-cups machine is the goal, it usually wins on both counts.
What each one is bad at
The Ninja DUO is more to store and wash than a single-pitcher machine, and if the cups end up in a cupboard you paid a premium over the pitcher-only BN701. The NutriBullet Combo has no presets, a slightly smaller pitcher, and a one-year warranty that excludes the cups. Neither has a tamper, so thick low-liquid loads in the big pitcher mean stopping and scraping on both.
The decision rule. Choose the Ninja DUO if you want the bigger pitcher and hands-off presets, and value a comparable continuous-watt figure. Choose the NutriBullet Combo if price and cheap, everywhere-available parts matter more than presets — for a lot of buyers that tips it. And if you are honestly only ever going to use the pitcher, skip both combos and buy a single-jar machine on a longer warranty.
Not sure you need the cups at all? The pitcher-only sibling is covered in the BN701 review, and the whole category is ranked in the high-power roundup.
How we picked
Blenders we claim to have tested: 0
Every site in this category tells you they blended twenty smoothies. We have not blended any, and we say so. Here is what we do instead: read the manufacturer's manual and spec sheet, record the published motor rating, jar capacity and warranty term, verify the warranty against the manufacturer's own warranty document, work out what the machine costs to run for a year and show the arithmetic, and cite all of it so you can check the work. Prices come live from Amazon's API and disappear rather than go stale.
The scores above are judgments from that documented research — not test results. The full rubric, including what disqualifies a product, is published in full.
