The two doesn't even play in the same category:

"source code editor" vs full fledged IDE

It doesn't make much sense to compare the two in general imho.

VSCode is truly a full-fledged IDE for TypeScript at least, and via plugins it can play the part for several other languages, including Rust. Mostly those depend on the quality of their Language Server implementations.

Which was exactly my point, I said "in general" but for some precise use cases, the comparison actually makes sense.