I will tell you that every manufacturer will feel and swing differently in your hands. I grew up playing with a Head Prestige Mid in one variation or another. In the past 10 years, first 5 years with the Head i.Prestige Mid, latter 5 years with the Prestige Classic 600. Then I switched to the Wilson BLX90.
Although the spec of a Prestige Mid and a Pro Staff 90 are very similar (nearly identical), they SWING drastically different. It took me several months to get used to the BLX90. Head frames are typically more oval shaped, whereas Wilson frames are closer to a perfect circle. Both are box beamed frames, but Wilson's box beams are typically boxier. If you play long enough, minute changes from one racquet will become BIG changes to you. Having said that, I can only imagine Yonex frames swing a bit weird. However, Yonex has quite a few classic/sought after frames among enthusiasts.
As far as playing like Roger Federer, my advice is to NOT copy him. Not because he's bad to model after (far from it! He's as close to perfect as anyone can get), and I'm not saying one can't duplicate him, but you need to do what is the MOST natural to you. Roger Federer plays the way he plays because it's natural to him, and it just so happen to look so graceful and effortless. He has what I call "easy power". Impeccable timing, GREAT footwork, and he may not look it, he's strong enough, especially at the core. A tennis player's power comes from the core and legs. The arm is really just there to direct that power.
I'm telling you, if you play/swing away from your comfort zone and all you're trying to do is to put on a show, trying to duplicate someone else, your game won't go far. I have drawn comparisons with my strokes to that of Roger Federer's (video if you'd like to see). I'm flattered, but this is the way I was taught and it's just natural to me. I couldn't copy Roger Federer, I started and developed these strokes before he was ever on TV. While I have similar looking strokes, his result is 1000000000000x better! So I am flattered by the comparisons I am able to draw.
And I agree with you, another "Roger Federer" is not likely to come by anytime soon. I'm dying to have the opportunity to watch him live before he retires.
As far as the racquet terminology I threw up, I apologize for not explaining earlier.
Balance - Headlight = more mass in the handle, so the head is light
Headheavy = more mass in the head, so the head is heavy
Even balance = mass equally distributed
Swingweight (SW) - It's a measure of how heavy the racquet feels during a swing. I don't know the unit of measurement, but basically the higher the number, the heavier it swings. Note that a light but head heavy frame may have a higher SW than a heavy but head light racquet. Get it?
Glad to answer any more questions you may have