Has anyone compaired the data from a sportsman race pak to their play back feature?

When I do they are different,trying to decide if something is wrong with my 450?

I've never compared mine side by side but they seem to be accurate. How far off if yours?

The start point will be different but the rpm acceleration rate, shift rpm, fall back etc should be the same. If not I would lean towards trusting the racepak over the 450.