I'd be surprised if the SV650 can outrun the 750 Kat in a straight line.
Tough to say for sure. Depends on what the power-to-weight ratios are for the bikes. That's 100-less lbs advantage on the SV650. Also, the Katana's running 10.7:1 compression ratio versus 11.5:1 on the SV650. The Katana's on carbs and the SV650 is on fuel injection. The Katana's air/oil cooled while the SV650 has water cooling. Taking all this into consideration, those extra 100ccs may not give the Katana that much of an advantage.
OK, found some numbers!
Looks like despite the 750 Kat being heavier, it has a better power to weight ratio than either SV and does outperform it - just as I thought.
As tested by Motorcycle Consumer News
MPG figures are per US gallon
'00 Bandit 600Rear Wheel Horsepower/Torque: 68.6/36.5
Weight: 505 lbs.
Fuel Economy: 32.3 MPG (that's the lowest I've ever heard of for a B6!)
Top Speed: 127 MPH
0-60 MPH: 3.97
0-100 MPH: 10.72
1/4 Mile Time/Speed: 12.16 @108.93 MPH
60-0 Stopping distance: 114.1'
Power to Weight Ratio: 1:7.36
'98 Katana 600Rear Wheel Horsepower/Torque: 68.8/37.4
Weight: 507 lbs.
Fuel Economy: 40.0 MPG
Top Speed: 134 MPH
0-60 MPH: 4.12
0-100 MPH: 10.81
1/4 Mile Time/Speed: 12.25 @ 108.40 MPH
60'-0' Stopping distance: 115.4'
Power to Weight Ratio: 1:7.37
'98 Katana 750Rear Wheel Horsepower/Torque: 84.6/46.6
Weight: 518 lbs.
Fuel Economy: 44.1 MPG
Top Speed: 143 MPH
0-60 MPH: 3.52
0-100 MPH: 8.67
1/4 Mile Time/Speed: 11.52 @ 116.26 MPH
60'-0' Stopping distance: 111.4'
Power to Weight Ratio: 1:6.17
'03 SV650 (naked)Rear Wheel Horsepower/Torque: 68.6/45.2
Weight: 428 lbs.
Fuel Economy: 35.5 MPG
Top Speed: 126 MPH
0-60 MPH: 3.74
0-100 MPH: 9.75
1/4 Mile Time/Speed: 11.89 @ 111.36 MPH
60'-0' Stopping distance: 120.3'
Power to Weight Ratio: 1:6.24
'03 SV650SRear Wheel Horsepower/Torque: 69.0/45.1
Weight: 433 lbs.
Fuel Economy: 47.8 MPG
Top Speed: 128 MPH
0-60 MPH: 3.61
0-100 MPH: 9.07
1/4 Mile Time/Speed: 11.63 @ 114.41 MPH
60'-0' Stopping distance: 119.04'
Power to Weight Ratio: 1:6.28