In Tests
Dravid beats Younis for top spot.
Comparison below
At Home : Younis has edge (broke Mendis, Harbhajan, Kumble and dominated all bowlers in UAE)
In Aus : Both had only few exceptional inns and mostly failures. Dravid takes this for Adelaide '04 and Perth '08 innings which were critical to victory
In Eng: Dravid clearly dominated with 2 exceptional tours and one mediocre tour. Younis had 2 great innings but too many failures
In SA: Tie. Both have poor records avging 32 and 29 with just one hundred. Dravid makes up for minute average difference as his ton came against Pollock/Donald
In NZ: Dravid wins this with stellar inns in '98 and '02. Younis has a respectable record as well
In each other's backyards: Tie. Dravid has Rawalpindi 270 to Younis's Bangalore 267
Overall: Dravid wins 3 categories to Younis' 1 and takes first place
Laxman and Yousuf are competing for 3 and 4.
Comparison below:
At home: Yousuf wins this round with his 65 avg. and dominating play. Laxman behind with his 51 avg although some great clutch innings
In Aus: Clear knockout blow to VVS. MoYo's embarrassing record in Aus not even worth comparison
In Eng: This time knockout blow by Yousuf. VVS' inability to counter second new ball swing repeatedly exposed on 3 diff tours
In SA: Another knockout by VVS with a 40+ avg and clutch 2nd inns 90 leading victory push. Yousuf's frailty against bounce lets him down badly.
In NZ: Yousuf again tops Laxman with his heavy scoring and classic double hundred. VVS' respectable avg looks better than it is because of century on dead pitch in '09. His swing demons again exploited by honest seamers like Tuffey/Martin/Adams etc.
In each other's backyard: Tie. steady mid 30s avgs for both with no memorable inns to speak of
If we go further, Laxman shades Yousuf in SL and probably against Windies as well (although MoYo had just the one tour)
But on balance I'd pick Yousuf as marginally ahead of VVS.
Overall
Dravid
Younis
MoYo
VVS
In ODI's there is no need to go into any detail
Order is.
Yousuf
Dravid
VVS
Younis