Butler is playing great, however, he is also a product of the entire system and talent that is on the roster
His size, strength, is closer to a PF, but he has skills of a G, he knows how to fully utilize his size at SG with great timely cuts, especially because The Bulls have BIGS that could pass/facilitate/and post
His DEFENSE is very good but also must give credit to Thibs and the PF and Centers that The Bulls have, that we do not
It isn't even fair to compare Butler and Iman Shumpert, Butler's size/strength is closer to a PF, while Iman is closer to a combo guard
Butler has developed much the past couple of years due to the loss of Derrick Rose and the passing game of Noah and the system in Chicago
Is Butler better than Gordon Hayward who did get a max contract, I don't think so, not yet at least
He is very important to the Bull's team though
Butler played the most minutes in the league last year but shot under 40%, however, with Rose and Gasol added to the team, his FG % will likely go up by a lot in a contract year
However when players like Alec Burks gets over 10m per year, one can easily argue that Butler deserves much more
Both players have the great size/strength to play G/F and even PF on switches at times, especially vs some SF/PF's
Both have guard skills while I think Hayward is much better offensively than Butler
Look at all these players demanding MAX contracts, with the new CBA in 2017 coming, it might look like peanuts
However, there has to be a line drawn somewhere, while some players are good players, they are not worth MAX contracts or the contracts they are seeking, like Burks recently got