When your cover gets injured it can be fairly hard. Not as if Ulster are a bad team either and didn't play a strong side. Also Ravenhill is not an easy place to go.
Your logic about Healy is ridiculous he had a poor game for once against one of the best scrummagers in Europe wow. He has shown on numerous occasions now that he's more than capable at scrum time.
A scrummager who he's done before let us add. A scrummager who today possessed a distinct head-start in terms of support from his lock and hooker. I absolutely do not get how anyone can take anything significant or lasting from this single night with all the factors taken into account. Don't rate Healy, ok, fair enough, not that I agree, but this idea he's suddenly not a Lions candidate because he got done by one of the most destructive scrums this side of the channel at Ravenhill with those second rows is ludicrous.
No offence Tony, but you'd be forgiven for thinking Leinster were playing Zebre at home, rather than the form team in Europe away, on reading your post. Which credits neither team.
edit:
Leinster's depth - in fairness, it's being really tested now. Last year, they were wheeling out players like Ryan, O'Malley, Kearney jr when they had to bring in reserves. None of those involved. Their backline in particular has been hammered. Ironically it was their pack that got beat there despite looking very strong - Mick McCarthy can't come soon enough, the second row is simply not good enough, don't think their needs end there.
As for Ulster... front row magnificent, Henderson did a great job of running the lineout - he's not a lock right now, and maybe never will be, but I've seen far worse cover, him and McComb put a hell of a lot of weight around. Nick Williams, back at 8, looks better - coincidence, I don't think so. Diack looks like he's come good and Henry, just great, always is. Pienaar class, Jackson made a few too many mistakes but he'll learn, young Skywalker did well though. And nice to see Adam D'Arcy back.