Conley has historically been the better player? Well, yeah but hell, they were comparable last year when they both had career years. At age 22, Russell was a ton better than Conley at 22. The absolute disregard for any kind of improvement blows my mind. Conley now is better than Russell. Conley in two years might be worse than Russell. Conley in 4-5 years will definitely be worse than Russell.
Not every old player is LeBron James. Look at Lowry - he had good moments, but his regression is obvious. Many good games and moments but also many bad games and moments. If we got Conley, I think we would be getting more of a Lowry or Chris Paul than a consistent beast every night. So yeah, better than Rubio but not some guy who is going to carry us night in night out.