Not really, in my experience as a decent pilot and a better ground player, CAS has the upper hand at almost any BR for almost any nation.
If we consider uptiers, lineups, nation-availability or downtiers void, then:
Between 1.0 and 7.3 CAS has the extreme upper hand. Bombers and attackers can hit ground targets unimpeded with bombsights, large radius’ bombs and skilled rocket volleys. Most anti-air at these BR’s get kills from pilots that fly either too low or in straight lines. If you work together with other planes any SPAA is free pickings and are often the first targeted anyways by pilots (HVAR, M8, but also bombs and guns can snipe AA from over 2 or 3 km).
Notable CAS-capable aircraft(That I enjoy to turn the tide of a battle if needed) in these brackets include, but aren’t limited to:
Spoiler
- Hawk III
- A-36
- P-63-A5
- Helldivers
- B7A2
- P-51 (A, D and C)
- Corsairs
- BF109 F4
- Do 335 variants
- Ju 288
- yak 3 or 9
- Me 262
- Pe 8
- Tu-2 variants
- Su-11
- Firefly variants
- Various spitfires, like the Mk. IX or Mk. 24
- Lancaster
- C.202 variants
- T/B.18B
- etc.
In the end you still need to spawn in a ground vehicle after your plane at these BR’s if you want to carry (to capture objectives), but CAS undeniably is a great tool to turn the tide of a battle and make a good bank of SP and SL in the process.
It is at 7.7 (VEAK 40) and untill 8.7 (PGZ09)/9.0 (Sgt. York), where you could propose the argument that some SPAA are OP. But still, planes with CCRP, or even better CCIP at 8.3 or higer make mincemeat of most, if not all, SPAA. Bombtossing can be done reliably at around 3 km in an alpha jet or a harrier for example, and the mauser is deadly if used right in low passes. A skilled SPAA player at these BR’s would be able to keep the sky clear in most games when using the META SPAA.
But even then you can still evade most, if not all, SPAA gunfire by flying either very high (with bombers), or low, incoming from unexpected angles, like in a Barougan for example.
All 9.3-10.3 missile/MANPAD-based SHORAD can be easily beaten with manouvres as suggested by others in this thread. This is very evident in Squadronbattles, where you can’t be uptiered, you see experienced players on both sides and CAS still is a major force to win games. Personally I rarely, if ever, get killed by SPAA at these BRs in both GAB, GRB, GSB and Squadronbattles. That experience I however do have at 8.3-9.0.
In general CAS and SPAA are decently balanced from 7.7 untill 9.3, but I feel like that is more because of the large amount of players that do not play their vehicles to the best of their strenghts on both sides, with high skill ceilings but low barriers-of-entry to play both vehicle classes.
Even the 11.7 SPAA can be beaten by an attentive CAS player and only at 12.0 do we start to see real problems where CAS is a major force shift.