You can't handle the truth?
Does the collector's box contain everything that a start set contains?No, it doesn't.
The Collector's box:
8 Sidekick dice (special black and grey, instead of black and white)(enough for 1 Player)
10 The Basic Action Cards for UXM set
12 Basic Action Dice (special black and grey, instead of black and white)
1 Alternate Art Professor X 'Recruiting Young Mutants' character card
4 UXM Booster Packs (just random boosters like you can buy for about $1)
1 Storage Box (which can hold a playset of all your dice)
1 Dice Bag (cloth, kind of velvety)
The Starter Set:
16 Sidekick dice (enough for 2 players)
10 The Basic Action Cards for UXM set (same as above)
12 Basic Action Dice
24 Character Cards (8 characters, with 3 versions of each. These cards are ONLY in the starter set, no where else)
16 Character Dice (2 each of the 8 starter characters)
2 Dice Bags (small, and made out of airline sickness bag material)
Those are the contents.
If you are just starting out, you definitely want the starter set. You need those 24 character cards.
The collector's box is truly only for collectors and completionists. Buy the game, and play it, and see if you like it first before you jump into it.
Although, as I mentioned, the collector's box will hold a full playset of all the dice for both this set, and the previous set.