When you have multi position players it isn't surprising that it plays better at one position than the other. My DC/DMC used to play at DC when I played hexagon, and now I play 4-5-1v he plays DMC. Definitely he is now performing a way better, in fact he even netted a brace recently despite playing DMC with blue arrow. The multi position players, tho useful, can be a headache for form. Single position players don't have any choice, so they're the masters of that position.