Selected items from two linked lines
$ cat ... | awk '
/device_name{/ { print striD=gensub( /.*secureBT="([^"]*).*/, "\\1", "g", $1) " runs PromEx " striV }
/export_info{/ { striV=gensub( /.*version="([^"]*).*/, "\\1", "g", $1) }'
Count of words line-by-line
$ awk '{print FILENAME, NR, NF}' /tmp/l3*.txt