I think it's actually a fair bit underscaled to the Unleashed line...
I'm not kidding... That said I don't think it's quite as bad as you're thinking DR. It's not a HUGE craft. It's doable to-scale actually (not by hasbro but I think it's a believable ship one could own in their collection if they wanted to make a scratch built one, unlike say a Tantive IV *cough*snicker*cough*).
I saw a scale Infiltrator on Ebay once a long while back... It actually wasn't a bad size. I'm thinking Queen's Starship-ish or slightly larger from my memory but I can't quite recall specific dimensions. It was pretty cool though.
I think it's a pretty decent looking toy... the key word being toy. As a fan of scale vehicles though this thing's a dismal failure.
I just picked up an Avenger Torpedoe Bomber for $35 at WM and I mean there's no comparison... and it has 3 figures too. It's a behemoth plane though... Given the size of the ship though I didn't expect much from Hasbro on it honestly. I think they COULD have done better (not to-scale, but better), but would've sold it in the $40 to $50 range and not cranked out as many of it for retail... I really look at this ship though and feel like it was something they had from like 1999 and didn't put out till now to try and breath some life into the $20 pricepoint. Just a theory I'm sticking with.