Understanding Tim Duncan is still playing, this is an 'as of now' comparison:
Kobe Bryant:
Seasons: 20
Games Played: 1,346
Points: 33,643 (25.0 ppg)
Rebounds: 7,047 (5..2 rpg)
Assist: 6,306 (4.7 apg)
Steals: 1,944 (1.4 spg)
Blocks: 640 (0.5 bpg)
FG%: 45%
FT%: 84%
MVPs: 1
Championships: 5
All Star Games: 18
Win Shares: (18 per season)
PER: 22.9
Tim Duncan:
Seasons: 19
Games Played: 1392
Points: 26,496 (19.0 ppg)
Rebounds: 15,091 (10.8 rpg)
Assist: 4,225 (3.0 apg)
Steals: 1025 (0.7 spg)
Blocks: 3,020 (2.2 bpg)
FG%: 51%
FT%: 70%
MVPs: 2
Championships: 5
All Star Games: 15
Win Shares: (24 per season)
PER: 24.2
Kobe Bryant:

Seasons: 20
Games Played: 1,346
Points: 33,643 (25.0 ppg)
Rebounds: 7,047 (5..2 rpg)
Assist: 6,306 (4.7 apg)
Steals: 1,944 (1.4 spg)
Blocks: 640 (0.5 bpg)
FG%: 45%
FT%: 84%
MVPs: 1
Championships: 5
All Star Games: 18
Win Shares: (18 per season)
PER: 22.9
Tim Duncan:

Seasons: 19
Games Played: 1392
Points: 26,496 (19.0 ppg)
Rebounds: 15,091 (10.8 rpg)
Assist: 4,225 (3.0 apg)
Steals: 1025 (0.7 spg)
Blocks: 3,020 (2.2 bpg)
FG%: 51%
FT%: 70%
MVPs: 2
Championships: 5
All Star Games: 15
Win Shares: (24 per season)
PER: 24.2