More like our FTBs couldn't handle a greentop vs Irish seamers.
The top sides show consistency in bilateral series across all formats and the last time we did so was under Bob. In Tests we defeated Ashes winning England and India in 2005/06, drew away in India with a depleted attack, and beat a strong Sri Lanka with Sanga, Mahela and Murali still around away in 2006. The last team we won a Test in South Africa was under Bob.
Current ODI team could only dream of beating India away (that too from 2-0 down), beating England at home and drawing away, again defeating a strong Sri Lanka team away and being ranked 2nd.
Bob got the best out of so many players that underachieved prior to then such as Younis, Yousuf, Inzamam, Afridi, Malik, and Razzaq. Butt and Kamran had their best years under him, while even getting the best out of limited bowlers like Rana Naved and Rao Iftikhar.
The tragedy was ICC tournaments which he never cracked.