No, they are not, which is reflected in their weapon upgrade and long range DPS compared to IS or grens.
They are mid range squad that also excels at flanking team weapons, especially at max vet.
Because fusiliers are NOT long range squad, think of them as assault guards that don't need to stick rifle in opponents troops butts to deal damage.
I always use them as a long range squad, because thats what the in-game unit description said about them. Ofcourse those might be out-dated.
Exactly at half range, a riflemen squad and a fusilier squad is kinda equal. Its 50%-50% chance which will kill the other. In a long range fight fusiliers will win.
Anyway i will be honest, i usually used G43 as a close range weapon to gain maximum damage, and stock fusiliers on max range if enemy soldiers were not upgraded with any weapon. I will test what youve just said, but i think Rifles with LMG will dominate fusiliers with G43 on mid range. And its 280+60 vs 290+90..