Ludicrous.
The assumption that underpins your post is that Beams was somehow enabled in Collingwood's midfield, and was somehow only able to perform to a high standard when sheltered by a strong team. This is not supported by the evidence: in 2014 and 2015, the only years that Dayne Beams has (or will) missed the finals, he's put up numbers that are consistent with his career best form. Further still, he's performed to this elite level in an entirely different midfield and team structure this year. Beams is clearly capable of performing to an elite standard independent of the team he's in, and independent of it's performance.
You've implied in your post that Treloar is capable of performing to an elite standard independent of team performance. Seeing as both can boast of this merit, this does not suggest Treloar is worth more than Beams.
Even if the assumption were valid, the conclusion is not grounded in reality or logic. If a player puts up elite numbers in a team that racks up 3 wins in 44 matches, how valuable was his contribution? Conversely, perhaps a player putting up elite numbers was the reason the team performed so strongly? A cursory glance at raw numbers hides so much.