GIB doesn't understand balancing?

[woengel]

I think a pass by GIB would deny 16 total points, but that still doesn't explain this auction: https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn|~~M9417,rossi12,WOEngel,azalea211|st%7C%7Cmd%7C2S367TJHJD6KAC45KA%2CS248KAH258KD3QC3T%2CS9H3TQAD8TJC689JQ%2C%7Crh%7C%7Cah%7CBoard%204%7Csv%7Cb%7Cmb%7C1S%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7Cd%7Can%7C3%2B%20%21C%3B%203%2B%20%21D%3B%203%2B%20%21H%3B%209%2B%20HCP%20%7Cmb%7Cp%7Cmb%7C2H%7Can%7C4%2B%20%21H%3B%2013-%20total%20points%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7Cp%7Cpc%7CSQ%7Cpc%7CS3%7Cpc%7CS2%7Cpc%7CS9%7Cpc%7CS5%7Cpc%7CST%7Cpc%7CSK%7Cpc%7CH3%7Cpc%7CC8%7Cpc%7CC2%7Cpc%7CCA%7Cpc%7CC3%7Cpc%7CHJ%7Cpc%7CH2%7Cpc%7CHT%7Cpc%7CH4%7Cpc%7CC4%7Cpc%7CCT%7Cpc%7CCJ%7Cpc%7CC7%7Cpc%7CD8%7Cpc%7CD7%7Cpc%7CDA%7Cpc%7CD3%7Cpc%7CDK%7Cpc%7CDQ%7Cpc%7CDT%7Cpc%7CD2%7Cpc%7CD6%7Cpc%7CH5%7Cpc%7CDJ%7Cpc%7CD4%7Cpc%7CSA%7Cpc%7CHQ%7Cpc%7CD5%7Cpc%7CS6%7Cpc%7CHA%7Cpc%7CH6%7Cpc%7CCK%7Cpc%7CH8%7Cpc%7CCQ%7Cpc%7CH7%7Cpc%7CC5%7Cpc%7CS4%7Cpc%7CD9%7Cpc%7CS7%7Cpc%7CS8%7Cpc%7CC6%7Cpc%7CH9%7Cpc%7CSJ%7Cpc%7CHK%7Cpc%7CC9%7C

[wbartley]

This is a difficult hand, to be sure. It thinks it's too strong for a 1N bid in fourth seat and it has a singleton heart. But, of course, if you're going to choose double with this hand then you have to be prepared to rebid 2N after the expected 2H response. When balancing over 1S, I prefer to have 1N show 14-16 so I would have been able to bid 1N here, but GIB can't.