[Gowza]

tests in the last 2 years

ajmal: ave 23.82, strike rate 55.5, 6.1 wickets per match, econ 2.57
shakib: ave 28.61, strike rate 61.8, 4.2 wickets per match, econ 2.77
swann: ave 33.92, strike rate 69.3, 3.6 wickets per match, econ 2.93

ODIs last 2 years

ajmal: ave 20.26, strike rate 29.3, 1.7 wickets per match, econ 4.13
shakib: ave 24.84, strike rate 32.5, 1.6 wickets per match, econ 4.57
swann: ave 27.04, strike rate 36.7, 1.4 wickets per match, econ 4.41

t20Is last 2 years

ajmal: ave 15.40, strike rate 16.4, 1.3 wickets per match, econ 5.63
shakib: ave 22.20, strike rate 19.2, 1,25 wickets per match, econ 6.93
swann: ave 23.27, strike rate 21.8, 1 wicket per match, econ 6.40

so over the last 2 years ajmal is ahead of shakib and swann in every department in every format. ajmal is comfortably ahead of the other 2, the closest is shakib in ODIs.