So I tried to read up a bit on this one to understand the differences.
The Tundra with the higher state of tune on the 3.4L V6 TT engine has 389 hp and 479 lb/ft of torque. Car and Driver puts the 0 to 60 time at 6.1s. The hybrid max meanwhile is rated at 437 hp (an ~11% increase) and 583 lb/ft of torque (an ~18% increase). I am not one hundred percent sure, but I believe the 48 hp electric motor that works in series with the engine is the same as that used in the Grand Highlander and Crown. 0 to 60 time was tested by Car and Driver at 5.7s for the hybrid Tundra, so not a drastic increase in acceleration in this application; about ~7%.
If we look at the Grand Highlander, the base 2.4T is 265 hp and 332 lb/ft of torque. Going to the hybrid max, Toyota rates it at 362 hp (an ~27% increase) and 400 lb/ft of torque (an ~17% increase). Here we saw the instrumented testing drop from a 7s 0 to 60 to a 5.6s 0 to 60 for the hybrid. Roughly a ~20% decrease.
In general, it seems like the hybrid max system has a much bigger impact in the overall performance numbers for the 2.4T versus the 3.4T, but the impact of the system being there is also incrementally more significant. One could probably dive into the power bands for these 4 setups for some more nuances to it, but that is something that would be quite complicated

.
An interesting note on the hybrid max though which follows what has been reported on the Tundra (under performing EPA numbers). For the GH fuel economy testing, despite only being rated 21/28 mpg for the non-hybrid, Car and Driver reported a 29 mpg result on their 75 mph test; a nominal over performance. The hybrid max meanwhile under performed its EPA numbers of 26/27 with an observed value of 24 mpg.
For someone with a lead foot though, the hybrid max definitely seems like it will make more of a difference paired with the 2.4T (but don't count on it hitting EPA MPG numbers).