I rode that Kawasaki for about an hour and it definitely is a horribly bike for distance riding lol. My bike didn't really feel too underpowered just cruising around or getting on it. But I've been practicing wheelies pretty much any chance I get and I can feel myself getting more comfortable/confident doing them and I'm starting to get the front end up a little higher. Up in altitude I could pretty much rev it as high as I wanted in 1st and pop the clutch and it would only pick the front wheel up about 6-12" max. It didnt have enough power to pick the front end up any higher at all no matter what I did.
That's mostly what made me aware that it was down on power, I wasn't like getting up to speed thinking "man this is slow" or anything like that. But once I made it back down to Denver I could tell the bike was a lot peppier, pulled harder even in top gear, and was back to picking the front end as high as I'm comfortable with.