I wouldn't discount it that quickly. I still think it's a decent frame built for it's purpose (time trialling) and neither of us said categorically that it WASN'T a Pike. A rubbish frame wouldn't have clearences like that and your frame will certainly be made from a quality tubing. KL was one of Columbus' lightest tubesets for this purpose but with all these repro stickers about it's always going to be hard to tell 100%. Stan liked to use Reynolds, Ishiwatta and Columbus depending on the need, as all good custom builders do.
Depending on what you paid for it as a whole bike with it's mish mash of bits, you still have the basis for a decent rebuild there. Remember, the frame may well be what it was sold as and that's the most important part. Just go careful before slating people on a public forum before you know for sure.
Build it up and do few 10s on it I say
TVT 92 Carbone / 8sp Dura Ace 7402
1980 531sl Stan Pike TT / Super Record
1991 Raleigh Royal 531st
Battaglin Carrera SL / Suntour Superbe Pro
Duell Professional SLX
Merckx Corsa Extra / Dura ace 7402