I will now compare Kaneki's vaulting vs Wesker's

GrimReaperJr1232

Note: certain information (such as movement speeds) is sourced from the wiki—the wikigg one.

Vault speeds: From what I've seen and compared, these two are identical at 1 second (assuming Kaneki is enraged, as he should be in 90% of the match). Whether it's a window or a pallet, the vaults will take 1 second. This was notably NOT the case in the PTB, as Kaneki's pallet vault was 2 seconds in his base mode and roughly 1.33 in Enraged mode. Default was reduced to 1.5 to match the window vault, decreasing Enraged vault time to just 1 second.

Post-Vault cooldowns: Wesker has a cooldown of 1.5 seconds after vaulting. Kaneki has a slightly shorter time at 1.25 seconds.

Post-Vault Movement Speeds: After vaulting a pallet, Wesker's movement speed is reduced to 2.99m/s. Notably, Kaneki is slower at 2m/s.

The vault length is the same, Kaneki has a slightly shorter cooldown, and Wesker moves a little faster. On their own, they're pretty similar. YET, Kaneki's is the one people complain about, while Wesker's is mainly regarded as useless or gimmicky.

I believe this comes down to 2 factors.

1. Windup. Wesker has a lengthy 1.5-second windup. The windup is loud, visually obvious, and gives plenty of time for the survivor to register and react. If you drop a pallet in his face and he vaults it, then hits you, it's often your own fault. Kaneki's is a mere 0.35 seconds. Kaneki has no problem waiting until you drop the pallet, then vaulting immediately. There's very little room for error on his side.
2. Hindered. This is not as much of a factor as some might think, but it is a factor. It's 50% hindered for 0.5 seconds and applied when he's stuck in place, vaulting. If I mathed correctly (do not be afraid to fact check me), the survivor should lose roughly 1m of distance. This was a much larger factor on release when the length was one entire second. Combined with the shorter cooldown, Kaneki being slower than Wesker is hardly a factor.