Hi,
Try running the packet-tracer command that will show you all the stages the packet is going through. This will give you enough information to see if you are hitting correct natting and routing rules.
Packet-tracer input inside(interface from which the interesting traffic is generated) icmp x.x.x.x( interesting traffic at your end ) 8 0 x.x.x.x(interesting traffic at remote end) detailed
Here is a document for your reference:-
https://supportforums.cisco.com/document/29601/troubleshooting-access-problems-using-packet-tracer
Make sure the phase 1 and phase 2 are matching on both the ASAs.
Regards,
Dinesh Moudgil
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Cisco Network Security Channel - https://www.youtube.com/c/CiscoNetSec/