Licht is a RB, the RB's stamina is far more streched than a CB's.
Thuram ram an excellent RB and Maldini was an excellent LB, who have turned into CBs as they grew older.
Licht is not that old and he still handle the strain with ease, at least easier than Evra, but we cannot expect him to play in the same level for each and every consecutive match he plays, esp the ones that dont hold a particular importance.
I believe for Licht the main purpose was not to be injured, he wasnt that terrible, he made more runs that i would have asked for, for such a game.
He is a good defender for a fullback, but he cannot make up for the CBs inefficiences from the side of our defence.
The CB duo we had today was unable to hold its ground and forced him to play off his ussual limits. Ussually its the CBs that make up for the fullbacks defensive inabilities and not the other way around...