Maybe it's my imagination, but the Vita ver. started with 1 star and has since moved up to 2? Unfortunately, the patch isn't enough of an improvement to where it's likely to have any noticeable effect on the reviews. Load times are still "bad," as this is coming from someone who has only ever played the PS ver. of Chrono Trigger.
No; you're right, the Vita version is up to 2.2 now, but the early one-star reviews (the number of which is more than double any other star rating) are all at the top of the review list and are all heavily recommended. Hopefully future patches will get things sorted -- but it certainly doesn't help matters to have people who bought the game this early already be pestered to download a patch just to play the game.