Not like either of them were catching Nibali anyway. In any case, Tejay didn't really lose his podium shot on La Toussiure anyway, he lost it on La Planche des Belles Filles when he lost 3 minutes to the leaders early in the Tour. If he doesn't crack there, he's only a few seconds behind Nibali in fourth going into stage 11, and maybe instead of having him drop back to help Cadel, BMC cuts him loose (especially with the time trial later in the race where Tejay made up almost all the ground he lost to Nibali in stages 12 and on). Subtract the time he lost on those 2 stages and he's about 20 seconds back of Nibali at the end.
In any case, not sure what the point is in quibbling over the 1:50 or so JVDB lost on Belles Filles versus the 1:30 or so Tejay lost on the Toussiure (plus whatever you think the time he might have gained if he'd just been attacking on his own on the Croix-de-fer instead of making a futile effort to drag Cadel along adjusted by whatever percentage you think the chances of him actually staying away would be). Point being, if either one wanted to podium, they would have needed more things to go their way than just those two particular situations. Otherwise, I think we're splitting hairs over the 4th and 5th spots in the GC.