All that is fucking stupid is the 1600 health. Literally the only way to lose these units, is to go afk for a few minutes to replenish your stocks of paint chips to snack on. Like what in the fuck?
Well, truth be told, these units are as fast as infantry, while they have nice hp buffer, without it escape would be impossible.
AVRE doesn't need as big hp poll though, but both croc and normal one are meant to be there up front, taking hits so I wouldn't be too hasty with screaming nerf on them, especially MK VII.
And are you people really that stupid?
You will ALWAYS SEE AVRE before it shoots, you will NEVER SEE well played ST-the most important difference is RANGE. Range difference guarantees that ST will always hit and wipe while AVRE shots will miss unless you're literally a snail with your micro.