The matched crypto map is a dynamic map, which I assume due to the name. The uploaded configuration shows that this should be using a static crypto map rather than this dynamic.
What happens here is that the SA offer that juniper sends does not match to what the PIX has configured, on your configuration you have the match address using TCP ports (which is not supported by CISCO) but the SA created is using port 0:
local ident (addr/mask/prot/port): (FIX_CLNT_TST1/255.255.255.255/0/0)
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...