I am doing a little exercise in calculating un-exploitable calling ranges vs push fold ranges and have a silly question that I would like some input on:

Scenario:

MTT FR tournament, with ante (for sake of argument antes add up to 1bb), Pot of 2.5bb.
UTG shoves 10bb, and it folds to the BTN, getting pot odds of ~41.9%

Now assuming that UTG is push/folding a range somewhere in the region of
{33+, A8s+, A5s, AJo+, K9s+, KQo, QTs+, JTs, T9s} which I got from a pushfold chart does BB call with a range that exceeds 41.9% equity overall, OR, a range that consists of hands that each individually exceed 41.9% equity?

Now my instincts tell me that it is the latter, but the "solution" in this example would have us calling with a range of:
{55+, A8s+, ATo+, KJs+, KQo}

This range overall has an equity of 52.2%. Am I missing something? Intuitively I feel as if adding individual hands such as A7s (41.4%) which are not getting the correct odds would reduce our overall EV, but for some reason I don't feel so sure....

Suggestions? Thanks in advance