Exactly my thoughts the guy I lost my title last season had an even more aggressive formation:
DL DC DR
DC
MC MC
AML AMC AMR
ST

Playing down both flanks didn't seem to affect him at all. He had his attackers score a lot and he won the title, no tactics taken into consideration just how good your forward player are and the more they scored the more favorite his team was seen by the engine. I had 3 main attackers AML/AMR/ST he had 1 more so of course the stupid game sees his team as superior.