I’d give it a draw.
Whittaker clearly won rounds 1,2 and 4.
Romero got rounds 3 and 5. I wouldn’t score the 3rd round a 10-8 because Whittaker bounced back after the knockdown and landed some good shots of his own. The 5th round I guess you can score it a 10-8 but I’d have to watch it again, which would make it 47-47.
So it’s very clearly 3 rounds to 2 in favour of Whittaker. Which either means he won or it’s a draw depending on how you scored the 5th. So the outcome isn’t a robbery, but I think it should have been a draw.
Keep in mind Romero didn’t make weight and Whittaker fought for at least 2 rounds with a broken hand.