Tony actually doesn't expect anything at all, because his cultural reference pool is a barren wasteland and his only expectation of Sherlock Holmes is 'like, British, maybe?'

In that respect, Sherlock doesn't disappoint, so Tony smiles and shakes his hand and remains oblivious to any differences between this Sherlock Holmes and the (potentially fictional?) one in his universe.

His smile widens at the comment about his lab. "It's nothing like my lab at home, but it's as good as it gets around here." He's pretty proud of what he's managed to cobble together over the last few years. For Keeliai, and most of Konryu, Tony's lab is the bleeding edge.