Ok, I know Altiverb is considered 'better'. But is it really? I know it is much more flexible than SIR, but taking that away, is the actual sonic quality still the same?

ie, if you have an impulse loaded in SIR, and the same impulse loaded in Alitverb, and if you were to leave all of the parameters in default, will the end result sound the same?

If they do not sound the same, then why? Does each have it's own 'engine' where it processes the loaded impulse?

Thanks for any insight.