Lets see what stat have to say then:
EFH Pioneers = 4*80/1 = 320
EFH Assault grenadier = 5*80/0.95 = 421
EFP Assault IS = 5*80/0.97 = 412
EFP Ro.Eng = 4*80/0.9 = 355
EFP assault Engineers = 5*80/0.9 = 444
EFP RoRE = 5*80/0.9 = 444
Assault Engineers spawn with 1.0 target size, not 0.9.
But I have to agree here with the people that you are exaggerating completely about this strat, Vipper.
Yes, you can force retreats against lonely squads, even make them waste a faust with the fast repair speed of RoRe. But lets talk about the Elephant in the room now:
1) against a Kubel + sp, this strat is an absolute joke, and many people combine these 2 units at start
2) In teamgames, good axis players will bunch up their army as soon as possible believe it or not. Especially when they expect a scout car. And then this strat sucks as well... nobody is stupid enough to walk on the corner of the map with a lonely gren/volk in exposed positions when they know what you're trying to do here
3) Forcing a retreat on 1 squad doesnt matter, and afterwards smart axis players will not let that happen again