G2 CPR ACFT IN HIGH RATE OF CLB WAS GIVEN A LEVELOFF ALT WITHIN 300 FT WHICH WAS IMPOSSIBLE FOR FLC TO MAKE WITHOUT ALT OVERSHOT. IMMEDIATELY THEREAFTER THEY WERE CLRED TO SLOW AND TURN 40 DEGS FOR TFC.

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AFTER TKOF TO THE N FROM DALLAS LOVE; WE WERE CLBED IN STEPS THROUGH 17000 FT WITH VECTORS BEING GIVEN FROM RWY HEADING THROUGH L TURNS TO TAKE US DIRECTLY OVER DFW ARPT ON THE WAY TOWARD INTERCEPTING THE JOE POOLE DEP/COLLEGE STATION TRANSITION. SOMETIME DURING OUR TURN TO THE S FOR INTERCEPT; WE WERE GIVEN A CLB TO FL230 AND HADNED OFF TO THE CTLR WHO CREATED THE PROB. IT WAS A COOL; CLEARING NIGHT AND THE ACFT WAS LIGHT; SO WE WERE CLBING AT APPROX 4000 FPM AT AN AIRSPD OF AROUND 340 KTS. AS THE ALTIMETER WAS PASSING FL217; THE CTLR INSTRUCTED US TO LEVEL AT FL220. I REPLIED; 'WE WILL COME BACK DOWN TO FL220.' AT THE SAME TIME THE PF PUSHED THE NOSE OVER RAPIDLY IN AN ATTEMPT TO COMPLY WITH THE INSTRUCTIONS. HOWEVER; IT IS NOT POSSIBLE TO STOP A 4000 FPM CLB IN 300 FT; HENCE MY ABOVE RESPONSE. SHORTLY THEREAFTER; THE CTLR ASKED IF WE WERE LEVEL AT FL220; AND I RESPONDED; MAYBE TOO CURTLY; 'NEGATIVE; I TOLD YOU WE WOULD HAVE TO COME BACK TO FL220.' AT THE TIME; WE WERE SHOWING FL222 AND DSNDING TO COMPLY. WE WERE INSTRUCTED TO SLOW TO 280 KTS; AND THEN GIVEN AN IMMEDIATE R TURN OF 40 DEGS FOR TFC. WE COMPLIED. AT ABOUT THE SAME TIME; I CALLED LEVEL AT FL220; AND ANOTHER CTLR CLRED US DIRECT TO COLLEGE STATION FOLLOWED ALMOST IMMEDIATELY; IT SEEMED; WE WERE ISSUED A CLB TO FL230 AND WERE HANDED OFF TO ANOTHER CTLR. WE HAD BEEN WATCHING TFC AHEAD AND ABOVE; BUT IT IS DIFFICULT TO ESTIMATE THE EXACT DISTANCE OR ALT; ESPECIALLY AT NIGHT. SINCE WE HAD BEEN ISSUED THE CLRNC TO FL230; WE HAD NO REASON TO QUESTION HIS ALT; AND HIS DISTANCE DID NOT 'FEEL' CLOSER THAN NORMAL. IT SIMPLY APPEARED THAT THE CTLR FAILED TO SEE THE CLOSURE UNTIL AGGRESSIVE CORRECTIONS WERE REQUIRED; AND THE INSTRUCTIONS COULD NOT BE COMPLIED WITH AS QUICKLY AS THE CTLR DESIRED. ANOTHER POSSIBLE AREA OF CONFUSION COULD BE THAT ALL ACFT; AND EVEN ALL JET ACFT DO NOT PERFORM ALIKE. CLB SPDS AND RATES VARY GREATLY; AND SOME OF THE NEWER CTLRS MAY NOT NOTICE THE DIFFERENCES AS THEY WATCH THE RELATIVE MOTION ON THEIR SCOPES. THAT COULD HAVE BEEN A CONTRIBUTING FACTOR TO THE PROB WE ENCOUNTERED.