The World Swim Coaches Association has done an interesting analysis of the 2013 FINA World Rankings. In 2013 there were 509 athletes from 47 nations that ranked in the top 25 in the world this is compared to 517 athletes from 49 nations in 2012.
The top five nations overall were:
USA (89), Australia (53), China (47), Japan (44) and Great Britain (40)
Top three males:
USA (42), Japan (28) and Australia (26)
Top three females:
USA (47), China (33) and Australia (27)
There were 174 of the 203 nations affiliated with FINA competed at the 2013 World Championships. There were 22 different nations that collected medals in Barcelona.
The top five in the medal standings were:
- USA – 29 (13/8/8)
- China – 9 (5/2/2)
- France – 9 (4/1/1)
- Australia – 13 (3/10/0)
- Hungary and South Africa – 5 (3/1/1)
Another aspect that looked at was what FINA A time would have placed in the world rankings. It is to be noted that the FINA A times were based off of the 16th place standing from the 2011 FINA World Championships (‘t’ denotes a tie):
Males
| 50 free | 22.33 | t50 |
| 100 free | 48.93 | 42 |
| 200 free | 1:48.42 | t62 |
| 400 free | 3:49.55 | 30 |
| 800 free | 7:59.06 | 37 |
| 1500 free | 15:14.38 | 35 |
| 50 back | 25.43 | t46 |
| 100 back | 54.43 | 39 |
| 200 back | 1:58.48 | 34 |
| 50 breast | 28.00 | t64 |
| 100 breast | 1:00.86 | t41 |
| 200 breast | 2:12.78 | 57 |
| 50 fly | 23.96 | t57 |
| 100 fly | 52.57 | 43 |
| 200 fly | 1:57.03 | t27 |
| 200 IM | 1:59.99 | t38 |
| 400 IM | 4:18.99 | 49 |
Females
| 50 free | 25.34 | t55 |
| 100 free | 54.86 | 44 |
| 200 free | 1:58.74 | t46 |
| 400 free | 4:09.81 | 38 |
| 800 free | 8:34.33 | 42 |
| 1500 free | 16:26.36 | t33 |
| 50 back | 28.84 | t64 |
| 100 back | 1:01.39 | 62 |
| 200 back | 2:11.09 | 40 |
| 50 breast | 32.00 | t87 |
| 100 breast | 1:08.63 | 55 |
| 200 breast | 2:27.88 | 51 |
| 50 fly | 26.83 | t65 |
| 100 fly | 58.89 | 40 |
| 200 fly | 2:09.38 | t24 |
| 200 IM | 2:14.97 | t83 |
| 400 IM | 4:44.53 | 54 |