Naval is still slightly larger, but not by much. Two quick-to-check stats:
Statshark playerbase last month (based on leaderboard stats, tends to be an overcount):
Helo: 101,140
Naval AB: 154,864
Naval RB: 100,137
Remembering there’s overlap between modes, it’s likely the helo player base is currently around half of both naval modes combined.
This is potentially confirmable by saved replays in both modes (taken from the replay site, from 1700-1730 UTC today):
Helo PvE: 19
Naval (both modes): 34
Any other recent replay sample I’ve seen generates similar proportions. So yeah, the two player bases are quite close, possibly within a factor of 2 or so of each other in at least some measures of size currently.
Both of which were added, along with Rank VI bluewater, in the two years before Leviathans. Worth remembering when people say there were no changes to naval in for two years before this spring, which is more about them not paying attention than anything actual. Fighting the bots off combined with significant damage model changes led to significant naval game play changes, and dozens of new ships and several maps were added in those two years as well.