Confused by eth0.x and 8021q

Installing and Using OpenWrt Network and Wireless Configuration
1

in openwrt 19.x, are these two configurations equivalent?
config 1

config device 'dev_wan3'
option name 'br-wan3'
option ifname 'eth0'
option type '8021q'
option vid '3'

config interface 'wan3'
option ifname 'br-wan3'
option proto 'static'
option ipaddr '3.3.3.3'
option netmask '255.255.255.0'

config2

config interface 'wan3'
option type 'bridge'
option ifname 'eth0.3'
option proto 'static'
option ipaddr '3.3.3.3'
option netmask '255.255.255.0'

2

Use OpenWRT23.05.4 and LuCI