Hell no! LSB line is waaaaay better than the 1:1 bust line. So you think Venom, Carnage, Wolverine, Thing, Hulk and the Spidey's are better in 1:1? I know it's just your opinion, but it's hard for me to understand.
I have had all the 1:1 busts (except Wolverine and Carnage which is to come out) for sometime. I recently started collecting the 1:1 busts.
IMO, for MARVEL ONLY, the LSB busts, are exceptional, no question. The only two I have been mildly disappointed in are the Spidey, and that is only because I think they made it a bit too small, and the Spiderwoman (just a pose thing). The others are absolutely fantastic.
In the 1:1, the Thing, Venom, are simply beyond fantastic. And their demand for a high price time and time again partially illustrates this. The International Spidey is excellent. The Iron Man, too many paint issues (the LSB Iron Man Red and Gold is nicer, it just does not light up). The Hulk, forget about it. Unless you are an avid Hulk fan and collect majority Hulk, don't even bother with it (in fact, I think the LSB Hulk busts may even be heavier, lol).
Overall in terms of quality on a CONSISTENT basis I am more pleased with the LSB Exc busts (Personally, I really like the name plates, most have some thought put into them!). That said, there are not many 1:1 busts at this time that come close to the Thing and Venom.