VGF inventory has improved at 7 months with the addition of the resort studios. Outside of Fall Frenzy, Poly is generally achievable.
VGC cannot be compared with WDW counterparts as it is different in a number of ways.
Disneyland doesn't have the same audience as WDW so it's not competing with the plethora of resorts there. It's a small boutique offering and unless you own there, you're unlikely to be staying. It is also the only quality themed hotel in Disneyland that gives you the same "bubble" experience as at WDW. Yes, you can choose to stay across the street but your experience is not at all comparative. Grand Cal vs Best Western? I refuse to stay offsite because it negatively affects my enjoyment. No shade on those that do.
Finally, it's also the flagship with high cash rates and is almost always at high occupancy. At $300 pp you are saving over cash. At $400 pp you are still saving over cash.
Want to stay in an immersive Disney hotel in Florida? Take your pick. California? One option. DL isn't WDW.