Your results may vary, but that's not my experience. It looks great on paper, but the higher elevation and target priority mean it had died faster in my experience. I find two units of bikes far more effective than a T-47 for pretty much the same cost. More dice, no resistance value, lower profile, and twelve wounds to seven. Really not a contest for me.
And it's the same on the Rebel side. I'd much rather have a full Trooper unit with a Z-6 and a AT-RT with a Laser Cannon. Twelve wounds, better dice, lower profile, and less mobile but can be in two places at once.