It means that Ziggy is most likely the end game boss so only a few will scale to him, such as end of series Shiki. The power levels are also going to vastly increase at some point, since I doubt that Shiki is going to be the only op person in the Edens Zero crew.
Trust me, I REALLY want to believe that Ziggy is planet level, and also I didn't know wtf I was talking about earlier lol. This is most likely a planet level feat, and I didn't expect it to happen so soon. 😮
Laxus didnt have a healthy body as a kid, but got better when he got the lacrima implant. I wouldn't say he's strong only because of the implant though, since Cobra and the twin dragons aren't that strong. Laxus is Makarov's grandson, so he probably inherited the strong genes.
God Seed Aldoron is far superior to Zeref except in hax. The other God Seeds didn't have that much hype, other than God Seed Aldoron. Don't know where you got that from. Gajeel's attacks don't seem to be doing much to Aldoron so it doesnt matter, and as you said Aldoron hasn't even tried yet...