It's not copying Digimon, especially since Mega level only exists in the English dub of Digimon. (In Japan Ultimate is called Perfect and Mega is Called Ultimate)
And in the case of DNA Digivolving, Kyurem sort of has that covered.
You are basically using a Digivice to evolve a mega pokemon
It's more like Mighty Morphin Power Rangers transforming actually.
You don't wear a Digivice around your wrist, it's a handheld device.
The Mighty Morphin Power Rangers transformed with a beltbuckle, mate. Other ranger teams have wrist morphers, sure, but not the Mighty Morphin team. Also the Digivice 01 from V-Tamers 01 was a wrist mounted device. As far as evolution goes, it could only be used for Jogress, but it was still wrist mounted.
For the power rangers bit, I stand corrected. For the Digimon bit, the casual crowd doesn't really know about V-Tamers, especially not the way Digimon gets hated in these parts.