I was 209 lbs most of my teenage years and another 20 more after that. At 6.3 I was feeling and looking great.
There was few times that I went bellow that and I was looking like a boy instead of full grown man - according to few of my friends.
Now at around 280, I still feel OK, but it added 10 more years to my look. Of course I wish it was less, and I'm planning to go back to around 200-230. I'm fortunate that losing weight is very easy for me. I can lose 10-20 lbs a week, but I also love to eat and cook lol
Big chunk of my weight is in muscles, so average built guy at 209 may not feel so good with same weight...We are all different, and that's why some if not most of the online calculators won't work for everyone.