Well I'll still use the 1.25x boost for the weights, as it doesn't seem to conflict with we are showed.
Initial Raditz can pretty much speedblitz and oneshot weighted Goku:
He seems to be not even trying to perform this feat. Goku is writhing in pain and can barely move. At least a 1.5x gap between initial Raditz and weighted Goku, probably even more.
Goku also doesn't want a direct fight against him, being soon in bringing up his weakness:
However, joining forces with Piccolo might be able to allow them to defeat Raditz in a straight fight. Even when not attacking by surprise, they are somewhat confident that a team work might be able to do it:
So maybe Raditz (initial) = 1.25~1.3x > Goku and Piccolo unweighted? He doesn't seem to be worlds above them considering it.
However, Raditz wasn't exerting himself at that moment, and his first attack was already enough to make both Goku and Piccolo ***** on their pants:
Piccolo even said he [Raditz] showed no power like this before:
And it also aggravated Goku's will to grab the Saiyan's tail.
So, both Goku and Piccolo were badly speed blitzed and couldn't do anything unless rely on special techniques.
Raditz also noted he'd gradually increase the power of his attacks:
And the next assault was already enough to let Piccolo armless.
While Piccolo charges his Light of Death, Goku had to fight Raditz head on and maybe he got a resolve boost or something, because he was still able to impress his brother, who called him persistent:
Later on, he probably showed even more of his powers when blocking Goku's KMHMH, with this latter saying "what's he made of?"
Piccolo still believed his Light of Death could take Raditz out, after seeing him tanking Goku's KMHMH. But, Raditz still dodged it, flabbergasting Piccolo, who couldn't believed someone could dodge that. Raditz (dodging Piccolo's SBC) was finally his full power imo:
So, all in all:
Raditz (full power/dodging Piccolo's SBC) >> Raditz (blocking Goku's KMHMH) >> Goku's KMHMH ~ Raditz (2nd increase of effort) > Raditz (1st increase of effort) >> Raditz (initial) >> Goku and Piccolo >> Goku and Piccolo weighted