Thread:KrytenKoro/@comment-31365078-20200213180846/@comment-134861-20200214130938

"in some instances" is used for when it's one object in different situations -- so it would imply that you can get your Digimon to digivolve to Mega if you somehow unlock it in a special situation.

"some instances" refers to instances of the species itself, ex., a single MetalGreymon out of the MetalGreymon species.