The only reason Viv is ahead is because he barely faced any attacks with multiple ATG bowler like Sachin and Lara had to. It's a lopsided advantage. Every attack apart from Viv's own team in his era at most had one ATG bowler.
Ok, so which multiple ATG attacks did Sachin face?
Wasim and Waqar.
Waqar played all of two matches in '89 and by the time Sachin faced them again in 2000, was "done". In fact, as per the dates used repeatedly on this very forum to denote the peaks of both bowlers, Sachin manged not to face either during said years.
Ambrose and Walsh.
Technically Walsh wasn't an ATG bowler, but for the sake of this discussion, we proceed. Sachin never faced Sir. Curtly before the surgery, and there after he wasn't the same bowler. He lost a good amount of his speed and was not quite capable of the destructive spells as he was prior.
Donald and Pollock.
Pollock came in quite a few years after Donald, but they did have the biggest overlap of the ATG pacers. Though according to Cricinfo (and I don't have the time to verify right now, and so for now, I'll not take it as fact), he faced off against both in only 5 tests?
You make the point through, that the couplings that Sachin had to face were the only reason Viv is ahead, but that's more in name than performance. You say that Wasim was still good in 2000, fine but doesn't take away from the fact that Sachin still didn't face him on his absolute prime, as Lara did.
But by that same token, one can argue that the only reason Sachin is ahead overall is because outside of the ARG, Vivian didn't have the flat home pitches that Sachin was privy to, and never came close to having the luxury of the flat pitch era of the 2000's that Sachin did, nor played against as anywhere close to as many minnows.
Sachin very much matched Lara's performances against the great bowlers of the 90's, they both struggled, and wasn't close to Viv's performances vs the great pacers of his.
With relation to this thread, in god mode you couldn't bowl to Lara. So while we've reached a place where there's little doubt among most about who's the greater between the Prince and the little master, for me Lara was always better.