Thats just the thing, starting in the wrong gear is a huge problem in this car given you need to be above 6k to get power. You can see he is starting in one gear too high-look at his tach. The revs are below 5500 in a few of the pulls where it is visible which means he is starting in too high of a gear. Rolls should be having the revs in the 6k plus range.
Not denying these may be accurate results but the jump off the start in each of them is more indicitive of someone being in the wrong higher gear