Is this the hardest road ever to a championship?

[Neurotic Guy]

Certainly was 10 times tough than what the warriors had

Was it?   This is the kind of thing I like to hear. 

I do think the C's had good fortune with Middleton out and then the injury to Herro helped.   But I don't think any team in the league would have had an easy time with the Bucks sans Middleton, and it seems as it's been easy to neglect the strength of the Heat even though they were the #1 seed, had HCA (for whatever that means to the C's) and the Celtics did defeat them despite nagging injuries of their own.  C's were the better team throughout the series but clearly have an end-of-game problem that may prove costly v. GS. 

Are the C's about to face the best team (or toughest challenge) they've faced yet in this year's playoffs?   If so, to what extent is GS the best team or the toughest challenge?