Its a game of opinions. Mine is that the Murray of 2016 is a better all-round striker than the Bobby of 2016. In fact I don't even think its close, however much I love Bobby.
Now if you were comparing the two at their respective peaks, that's an entirely different discussion.
Glenn Murray is a better striker than Bobby or Hemed or Baldock or Wilson, though. If Bloom wishes to up his gamble a little, to improve on what we have, that's his call.
Certainly wouldn't blame him if he chose not to, mind.