Your dyno numbers are great, but without comparison graphs to see how that dyno stacks up it's impossible to compare. If you always tune on the same dyno you can track your improvements, which is what it's designed for. Not being negative, just stating a fact. A dyno is a great tuning tool for YOU, but without comparison dyno's it doesn't mean much to everyone else.
EDIT: Just took a second look and noticed it was a Dynojet dyno, which typically reads high. Again, not trying to rain on your parade but to be able to say you're pulling 400whp, you'd want to hit up a few other dynos to solidify that number.