Broken cam belt – Citroen Berlingo

My 2015 Citroen Berlingo Multispace has a broken cam belt, which has destroyed many rockers. It’s currently in one  (lets call it garage A) who quoted me about £2300 to repair. After taking it apart they said it’s the worst damage to rockers they have ever seen, and reckon that the pins from the rockers have got into the oil system, meaning that even if they did all those repairs there would be a high chance it would still not work and need the engine replacing at that point. The mechanic offered to buy it as it is for not very much money at all, as I can’t be risking that much money on a repair which might end up in the same position as before.
I wanted another opinion, so sent a photo of the damaged rockers and an explanation to another garage (Garage B) who said that it’s very standard damage one these engines and they’re highly confident they can repair it with no issues afterwards. I’ve attached the same photos for reference.

Basically, I’d love to know what anybody thinks about which garage is giving me the right level of risk! Thanks for any insight you are able to give, it’s very much appreciated!

Brand: Citroen
Model: Berlingo