Yeah. TS' diamond-hard skin certainly makes it an interesting match, though. Granted, Lizard is highly durable and bulletproof as well, but not quite on TS' level.
Then again, Spider-Man has hurt his hands more times on the Lizard than on Tombstone, as far as I know...
He has. Been awhile since that happened though. He's KOed TS quite easily not too long ago. Then again he's been on a roll recently. Oneshotted supposedly adamantium Hammerhead. Then they've been building up to a long awaited rematch with Mr. Negative in ASM. That ended with a one shot and Mr. N screaming like b!tch. I bet they didn't read up on him before writing the encounter. Sad.
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Azula: My mommy didn't love me so I'm going to burn down your village.
According to Marvel Database, he's Class 10 - specifically 6 tons being his limit. Guess it's ok, I never viewed him as stronger than Spidey, it's his durability that gave him the edge.
Lizard, on the other hand, has been stated by Parker to be "as strong as three Spider-Men".