Turbo can actually mess up timing for things. This is why you can't mash things in MK. If you do a combo that allows you to juggle a hit at the end, like in the corner with Kano for instance, pop up, JK, LP, manhandle, then a HK, you can't really mash HKHKHKHKHKHKHK because it gives you more of a chance to be late, something like this requires specific timing. As far as jabbing in the corner with turbo, you cannot double run jab with turbo any faster than I do it manually, so there's no point. People can escape in either scenario, and as long as they hold back if they try to counter, you won't throw them. You also can't throw between run jabs, as in the LP, LP part of LP, LP, run, LP, LP, so you'd have to throw after the run cancel, which is a bigger window to counter anyway.
