I'd love to see a comparison of manufacturing times for various things pre- and post-invasion
Like how long did it take to build a single su-37 before, and how long would I take now?
If I had to guess, I'd say it takes way longer to replace them nowadays, so basically every jet lost is a virtually permanent (for the purposes of this particular war anyway) loss. They can't possibly be building them faster than they've been getting destroyed.