I was reffering to something it lacked, not something that it possessed, when I reffered to it as weak [in comparison to Xenogears], so a specific example isn't something that can really be cited. The simple fact is that it does not cover anywhere near the number of themes that Xenogears does, and with nowhere near the detail.
In what ways was Xenogears flawed?
I think he is referring to disk 2 of Xenogears. I haven't played the game myself so I don't about any of the other game's flows.