[Exist-open] Query speeds is slower with Lucene vs. old

[mountainbiker <mai...@gm...>]

Running some more tests before we switch things over to Lucene.  HOWEVER, I
am noticing speeds to be slower with Lucene.  Here is a break down of what I
am doing:

The .xconf has
        <lucene><text qname="ids"/></lucene>
I also have the old indexing still in the file.

The data looks like
         <item>
             <ids>
                 <id>ABCDE</id>
                 <id>GHIJK</id>
             </ids>
         </item>

The NEW query looks like
        let $idsQ := <query><term occur="must">ABCDE</term></query>
        return //item[ft:query(ids,$idsQ)] 

The OLD query look like
         //item[ids/id='ABCDE']

count(//item) is 69,000 nodes; the returned results are 12,000 nodes.

Execution times:
        Lucene:  6390ms, 4921ms, 4562ms, 4125ms, ...
        Old:  1515ms, 1531ms, 1546ms, 1672ms, ...

I was expecting the Lucene times to have been quicker.  Do you see anything
I am doing wrong?
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