From: Scotland (Magnus Magnusson)--

"To the English, Wallace was merely a brigand; but his brigandage appealed to a deep-seated Scottish resentment of English domination and of the obeisance of Scotland's leaders to King Edward of England." ---- somebody who labels him only a brigand is wearing his sentiment on his sleeve.

Later

"Wallace was now a fully fledged-guerrilla (or terrorist, depending on your point of view), implacably dedicated to the destruction of the English troops who garrisoned Scotland's towns and castles, with a formidable band of disciplined, battle-hardened followers at his back."

Then, after Stirling Bridge, "Wallace and ...Murray were now the de facto joint rulers of Scotland, working in the name of John Balliol, the deposed king, and the people all over Scotland rallied to them--including most churchmen and some at least of the nobility."

So, it seems reasonable to say that at this point he had progressed beyond brigandage.

Obviously, complete objectivity is unlikely on this topic.