By the way, it's important when comparing different tunes to note what their base numbers are, and whether they're comparing bhp or chp. Also note that "rolling road' dynos (as most everybody uses) aren't terribly accurate, at least from an engineering perspective - hub dynos or (even better, but not very feasible) engine dynos are much more reliable, repeatable, and accurate. If rolling roads were accurate, there shouldn't be a difference between dynos from the same company (which there are, if minor) or different companies (which there are significant differences between).
So, the best solution is to figure out power gains based on before/after (ideally on same day/same dyno/same car) in terms of percent - not just absolute gains. +49bhp sounds great, but if the "base" number was already 230 instead of another tuning company's 180hp, their +45bhp is actually more gain - by almost 4%!.
Gotta love marketing, huh?