2/2 protoss army with a 20 food advantage beats 1/0 terran army and some bunkers.
infantry armor doesn't do much for marines inside bunkers, and ya there's a food advantage but there we're talking about 5 bunkers right? thats 500 minerals which is 10 food of marines if we're contrasting and comparing. additionally, unless both sides are maxed, the protoss will usually have a good food advantage because they'll warp in a round of whatever right before an attack.
and even still, this wouldn't look so stupid if it were at least close. avilo had way better micro than the toss in this encounter, that's unarguable, and the toss attacked right into walled off static d with an a move and didn't just win, but stomped the terran defense with an a move.
of course there's a ton of things avilo could have done to beat this guy, but toss is flat out easier to play, for better or worse. they're generally beatable, but easier to play. if you're just playing the game for fun though, it's not a big deal just mildly frustrating at times. but you're playing for the challenge, right? and toss is a helluva challenge.