Talk:Game-Reversing Technique Goku (Kaioken)/@comment-32999661-20171028172944/@comment-32271305-20180408094130

The mechanic is the same, the only difference is that SSB Vegeta's stack is turn-limited.

Again, there's a link in the Details section, hopefully the explanation is clear enough. But basically, they both add +50% to their modifier, which starts off with -50% so that the real benefit comes into play starting from the second Super Attack.