T-SQL and SQL certainly are different. I, therefore, would never assume someone knew TSQL just because they wrote SQL on a resume.
TSQL to me would mean the person understood the full language around the SQL statements, including meanings related specifically to MS, such as @ for variables, @@ for global variables, CONTEXT_INFO(), #, ##, etc..
Just SQL could be from any RDBMS.
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".