MM3 Tuner vs EFI Live for Cummins

Thanks

hi everyone just throwing something out there I have the new mm3 tuner for my 2012 6.7 dodge love it to death ray @Double R Diesel is awesome...I was told that the mm3 the tuner cant get into the system to check things out via internet laptop repairs like efi live if ur having issues that correct?...

I have noticed that MM3 and RaceMe Ultra advertise up to 200hp max while most efi Live tuners are in the 120-130hp max range. Why would there be such a difference?

By the way, I have had an MM3 from @Double R Diesel since early November and I love it.