Possibly so. And since those has had significantly more time off the pitch than on it. Not a risk I'd take and it's not like Gatland doesn't have plenty of options at centre.
Not disagreeing with you, but those other Lions Tours & RWCs have also been after some long periods out injured.
Interesting comment from Healey during yesterdays Saints game about Lawes having not played much rugby but going on the lions tour. he said that most Lions tourists would have loved to be touring on the back of a limited number of games & being fit & healthy instead of having been flogged for an entire season.
Gatland has picked him before &, if Manu does end up going, he knows exactly what he's getting with him, the pluses & the minuses.