The no.3 in your sig was ****ing crappy in India but hey I am not going to call you a hypocrite or anything because that would be wrong.
Not so much wrong, just a bit ... juvenile I guess. .
But yeah, you're right, Ponting struggled in India. Had a wretched, scarcely believable series. But this is more of an anomaly than a flat out betrayal of weakness.
Sure, Ponting sometimes did struggle against spin. But he also improved drastically against it, and in full flow his playing of spin was just like his playing of everything else. Fantastic.
And more to the point, Ponting in his prime was consistently superlative. Good enough to seriously be compared to Lara and Tendulkar. Sehwag was a phenomena in his (physical and metaphorically) local setting. Smashing attacks on dead wickets was his specialist skill, and he did it better than anyone I've seen. Perhaps if he'd played at 4 or 5 he'd have been even better, but then we wouldn't be talking about him as an opener would we?
Point is, you bring Sehwag to England and put him on a bit of a hairy wicket, his stock plummets. As a supporter, I don't fear him like I would Ponting, or yes, even Justin bloody Langer.
To conclude, Ponting's weakness was against a specific team, in a specific setting, against a specific bowler. Sehwag's weakness significantly anywhere outside his remit of, shall we say, pitches
unhelpful to the bowlers.