Should I feel ashamed if I can't clear Solo XQ?

[ZerotakerZX]

I'm not the top player, and never gonna be, cause my reflexes never was too sharp, and Im not that much of a gamer in general. But this game is fairly easy and with good equpment and builds, I became a good damage dealer, being able to enter top 3 or 5 DPS in MPA most of the time and earning nice titles on Base Defense Quests.
But I can't clear those damned Solo EX. I know that not many can, but I thought I'm better than this.

My problem is that I'm running out of mates. If only I could take at least 10 more I could make for sure, but as it is even with all possible bufs: drinks, tree, timed abilities, food, tokyo hamburger for HP restortion, I still can't beat overpowered one-shotting PD, cause Anga's WB draining my health like crazy prior the final showdown.

Anyway, the main question is: should I feel bad about it? Am I a stupid noob if I can't clear the most hardcore quest in a casual game? Or if just so unbalanced that sega should be ashamed, not me? You know, like Ghost and Goblins games, that meant to be nearly unbeatable.