Another unexpected top from Zenith

[thepossum]

Bid accurately as below and the East bot this time gives you an overtrick

 

Preempt to 4 instead and East finds the diamond lead

 

[HV=https://www.bridgebase.com/tools/handviewer.html?lin=st||pn|thepossum,~Mwest,~Mnorth,~Meast|md|3SK4HJ8653DAJ9CQ84,SJ9HQTDKQ872CAK96,SA2HAK972DT54CJ73,SQT87653H4D63CT52|sv|o|rh||ah|Board%201|mb|1H|an|Major%20suit%20opening%20--%205+%20!H;%2011-21%20HCP;%2012-22%20total%20points|mb|P|mb|3H|an|Limit%20major%20raise%20--%204+%20!H;%2010-12%20total%20points|mb|P|mb|P|mb|P|pc|S7|pc|SK|pc|S9|pc|S2|pc|H3|pc|HT|pc|HK|pc|H4|pc|SA|pc|ST|pc|S4|pc|SJ|pc|HA|pc|C2|pc|H5|pc|HQ|pc|H2|pc|D6|pc|H8|pc|D2|pc|CQ|pc|CK|pc|C3|pc|C5|pc|CA|pc|C7|pc|CT|pc|C4|pc|C9|pc|CJ|pc|D3|pc|C8|pc|DT|pc|SQ|pc|D9|pc|D7|pc|D5|pc|S8|pc|DJ|pc|DQ|pc|C6|pc|D4|pc|S6|pc|H6|mc|10|]400|300[/HV]

 

Do we get rewarded for careful consideration and accurate bidding

 

Does that lead difference really come down to a few points in a sim