>>64022974 (OP)Very. Artillery is much cheaper and more available so even if you're just a team of nobody grunts you can call artillery on a position that gives you trouble when air support wouldn't bother outside of a real emergency.
>Also how hard is it to destroy enemy arty/Tanks/INF with airstrikes only using stand off weapons?Depends on the standoff. With glide bombs you can get some range and still strike them well if your planes can see them from afar or if your ground troops give you timely coordinates. Ditto for air launched missiles like the Brimstone. Otherwise you're not going to be using large and expensive cruise missiles on tanks and probably not artillery either unless it's really important.