This is very simple, The advantages of Qlikview are the weakness of Microstrategy (MSTR).
MSTR is huge, lots of products to specif neeeds. Qlikview is all in One. No need to spend money on endless training.
MSTR needs a a reporting database, like a DW, for best performance. With Qlikview you doesn´t need a DW if you doesn´t have it yet. Less cost with aditional license and hardware for database servers and DBA to keep it running.
MSTR doesn´t provide an ETL Tool. Qlikview does.
In some configurations, MSTR is more expensive then Qlikview.
MSTR projects takes longer to deploy compared to Qlikview, and much more if customer doesn´t have a DW. They need to build it first.
Need more IT staff to maintain MSTR infrastructure compared to Qlikview.
Hope this arguments could help you.
Have a nice weekend.