I had full confidence that you guys would eventually level the playing field, you have a really good track record of always smoothing things out with time.
The part I disagree with is shipping the update with this much of a divide in capabilities. But you clearly have put a ton of work into the submarines and it seems like it's been quite the technical feat (along with other technical feats this update, huge round of applause there) so I can't blame you wanting to include it in the major naval update.
In the past, there's been similar things happen, just not to the same extent. I'll use Inferno since it's recent but it's not the only example. When rocket artillery was first added, we had a clear line in the sand drawn between Wardens and Colonials. Wardens get high fire/ low damage, Colonials get high damage/ low fire. Even though it was a munition type that was distinctive to one faction, the mechanics were still present on both sides. Both sides got to play with ...