And I'll throw my BUT in there...
Super Tuesday, (or whenever they swing into the South and the other states) has a lot more impact. An early leg up is nice, but if unsustained it can be of just short term benefit. The quality of the candidate is still more important to voters than the sheer mass of the warchest, a warchest in and of itself can only assure the candidate will be on ballots, at some point that can have a spoiler effect if it only hurts a viable alternative candidate vs the one grabbing up most of the electors.