Well, it's really stacker + pushState + MAX cache. But why would there be a performance penalty? Doesn't this result in the client doing _less_ work all around

Well, it's really stacker + pushState + MAX cache. But why would there be a performance penalty? Doesn't this result in the client doing _less_ work all around? Less work than the multi-page approach...and less work from the client-side templating approach, no?