I don't think wall of glass sounds at all like any of IB's solo material if thats what you were implying. During two listens of it yesterday, I for some reason was reminded of the Brand new heavies! Subtly tho.
I found it as enjoyable as the best stuff from BE, which admittedly I didn't overly rate. Wall of Glass is ok, not great, not bad, just fine.
Its more of a Liam song that A41 is a roses song as referred to above. So with that logic, his comeback is already 'better' than the roses from a relative standards point of view.