Noone here is claiming that Merkavas aren't great tanks but it still demonstrated their vulnerabilities to mass ATGM attacks when improperly supported.

As to the casualties:
40+ were hit, and 22 received pentrations.
5 tanks recieved catastrophic damage and of those 2 were destroyed by IEDs while the other 3 were repaired.

It still doesn't change the fact that one tank is worth many missiles and that its less than ideal to use them as just SPGs to support infantry.