Why bother with style="float:$stylevar[right]"

[doob]

Is there any good reason to use float:$stylevar[right] rather than just using float:right?

Its not like float:right could possibly be any other thing.

There's still a lot about the coding in the templates (not to mention the php files) that confounds me and I'm never quite sure if I'm missing some fundamental point about the way vbulletin was programmed when I make decisions like abandoning phrases by just inserting my own or tidying up what seems like a pointless use like $stylevar[right].