@RagnarokCzD : indeed, my descriptions lacked information/data. I just gave information that was enough for me to form a vague idea of the characters.

If we consider roleplay and power-gaming being each on an axis, from 0 to 100%, all that can be said of Ceega and Dench is that they are somewhat-roleplay, and Ceega is not really power-gaming (say, "under a given power-gaming threshold") while Dench is power-gaming (above that same threshold).

As Dench has S:11 D:9 C:14 I:16 W:13 C:12, that's just power-gaming, while if he had S:8 D:14 C:16 I:16 W:10 C:8, then this would be a min-maxed character (maximum power-gaming). If Dench is 30, was raised by Wizards at the Academy, wants to study further Charms and Illusions to have an easier time going to taverns, dreams of a diplomatic career, is a pacifist (except toward a certain Uthgardt tribe who wiped out his tribe when he was 10), is fairly proud and a bit vain from being the only Orc Wizard most people have ever seen, and his passion for food and lack of interest in physical exercise leads to a steadily growing belt size, then this character can be role-played a lot more than with just my initial description.

All areas of the roleplay-powergaming square are possible, i.e. roleplay and power-gaming are independent things. So a player can be playing their character high in roleplay and high in power-gaming, or high-low, low-high, ..., and of course there's medium between high and low. (Note : I am slightly assimilating the obvious-roleplay-potential of the character, and how much roleplay its player would put into it, which is a simplification.)

With the Roll rule, some characters in the high-roleplay medium-powergaming (let alone high-powergaming) zone, like Dench, are unavailable unless you're lucky. The optional Point-Buy rules locks out that character. The optional Custom Origin rule allows it. In a sense, one can say that Custom Origins improves both roleplaying and power-gaming options.

But a player who primarily wants power-gaming and min-maxing, with a medium-to-low interest in roleplaying, could already create their perfect character. Want an Intelligent and durable Wizard ? Play as a Human or High Elf.

Whereas a player who primarily wants roleplaying, with an eye for also medium power-gaming (16 in main Ability Score), could not. Want an Orc Wizard ? The backstory of your character doesn't matter, you can play it only if you're lucky or ready to accept less power-gaming.

In that sense, it seems to me that the Custom Origin benefits roleplaying-first players more than it benefits minmaxing-first players.