The problem IMHO about the 4-2-3-1 in Top Eleven is that the "holding" midfielders as they are known in real life 4-2-3-1 are DMCs, so the space between your DMCs and AMCs is wide, definitely not like in real life, cause you need that anchor in the mid between attack and defense. If you arrange the 4-2-3-1 in Top Eleven just life in real life, those 2 in the mid are placed as MCs, resulting in a big space between your defense and midfield, which again, doesn't happen in real life. The only compromise I can see to play a more realistic 4-2-3-1 in Top Eleven is to have a 4-1-1-3W-1, with a DMC and MC. Something like this:



Hope you guys understood my post.