It quite depends. Kuririn can be refering to the Super Saiyan as a transformation (Thus is lumping Piccolo as a Super Saiyan, saying he too strong for someone who can't transform into an aryan) or as a power tier (Thus saying however Piccolo's strong, he is no Super Saiyan). Personally i lean toward to the first, considering other evidences like Piccolo's willingless on taking on guys who are >/>> Debut SSJ Trunks.
ahill1 said:
Whenever a Super Saiyan had revealed their Ki prior, characters are immediately shown to react to its sheer magnitude; when Piccolo reveals his Ki while getting ready to fight #20, there is no such reaction. Nor is he lumped with the power of the Super Saiyans later on, where the level of a Trunks that defeated Freeza is. It's easy to appear strong when beating a character that was presumed to be at a level only a SSJ could handle, but this scenario is not very different from Goku defeating the Ginyu Force and Krillin believing he could now beat Freeza with a power level of 5000.
The thing is that #20 actually is a foe that only a Super Saiyan could handle. While stomping the Android, Piccolo stated this:
Chapter: 347 (DBZ 153), P3.2-3
Piccolo: “It seems that in the original history, we were supposed to be wiped out by you two androids…But it looks like the future has changed somehow…Was it that you weren’t as strong as we thought?...Or have we grown too strong?...
He thinks it's possible the Z Fighters (Him and Vegeta to be more exact) have grown too strong, implying there possibly wasn't anything wrong with #20's power.
As for nobody being "ZOMG" for Piccolo's power up, that's not necessary at all. Piccolo's entrance is supposed to be a surprise for the reader. He spend most of his time without showing any indication his progress and then surprise! He's pummeling one of the supposedly fearsome Androids.
Btw, it's quite ridiculous to use such a minor thing as the lack of a reaction to disregard a feat and two statements.