Maxperson
Morkus from Orkus
And still cast weaker spells. A 6th level bard has 3 1st and 1 2nd level spell. A specialist wizard surpasses that at 3rd level with 3 1st and 2 2nd level spells. To get to 6th level a bard needed 20k exp, while that 3rd level wizard who is better at being a wizard only needed 5k. 20k made that wizard 5th level with 5 1st, 3 2nd and 2 3rd level spells. The bard did have a few more hit points, though, with d6 vs. d4. Hit points don't make you a better wizard, though.Because the Bard gained levels more quickly up to a certain point. 5th or 6th level IIRC.
In short, both classed at 20k exp left the wizard with 6 more spells(more than double) and third level spells vs. the bard's 2nd level spell.