BGP and multiple AS?

Question

Hi, 
 
 I'm currently using an Ubiquiti EdgeRouter at home, and I'm evaluating Sophos XG, to check if it's a suitable replacement, as the firewall capabilities of EdgeRouter are limited. 
 
 One thing that struck me, is that I can only define one AS on the BGP page in the Sophos XG UI. UBNT supports multiple AS's, each with it's own configuration. 
 
 Am I missing something here? It seems weird that Sophos XG doesn't even match the EdgeRouter in routing functionality, despite the price difference.

LuCar Toni · Accepted Answer

The GUI possibility are very "limited". 
 Because most of our customers does not use BGP, and if they do, they use the CLI. 
 https://community.sophos.com/kb/en-us/132891 
 The Console covers a bunch of configuration.

Jeroen Jacobs · Answer

Ah, this makes sense. If I understand correctly this won't be an issue in my case, as routing happens on the EdgeRouter. 
 
 One more question: If I put the XG in bridged mode, between my router and my managed switch, how would I create different fw rules per VLAN (example: allow VLAN 100 to access the internet, but not VLAN 200)? Zones are tied to an interface if I'm not mistaken, so you can't use that in bridge mode.