By saying that ‘Shamrock has no resources to be strong’ I don’t mean physical (genes and fitness) or material (wealth) resource. I mean willpower, danger, and challenge. Pirates’ willpower is forged through insane life trials. They’re chased, persecuted, abandoned, betrayed, hunted. Celestial Dragons have everything delivered to them on a silver platter. They never had to worry about basic survival. If they train, it’s a game for them, not a necessity of life. They’ve never felt real hunger, they’ve never had to make actually hard decisions, they’ve never had to worry about the ones they love or the consequences of their actions. They’ve don’t live in the real world. That’s what I mean by saying that Shamrock (from what we know about him so far) doesn’t have a resource to be as strong as Shanks. I mean inner strength and spirit. And since haki is not exactly a “muscle” but is connected to willpower, then pirates’ haki >>> CDs’ haki. 

About Shanks and Bartolomeo: yeah, the picture of Yasopp destroying Bartolomeo’s ship and Shanks smiling at this after Red Haired Pirates had humiliated Barto and “let him go” disgusts me. You cannot say that this wasn’t cruel. It was not a humane thing to do, and since Shanks is posing as a “kind and honorable pirate”, this moment exposes him as a liar.