[Shillx]

If you assume that they have equal hands...

You have 27.9% equity if you fold. You will have 36.5% equity on average if you call and win.

So here you need to win 48% of the time to make this call.

If you assume that the SB is a 57/43 favorite...

You will have 27.0% equity if you fold. You will have 36.1% if you call and win.

You will have to win ~45% of the time.

AKo has about 48% equity against 2 random hands. This looks like a clear fold to me.

Edit - Whoops sorry I meant to say the SB is the favorite and not the button.