This document summarizes research comparing satisfaction and dissatisfaction levels across different dimensions of library services, such as affect of service, information control, and library as place. The research analyzed data from 19 European libraries and the ARL LibQUAL+ consortium in 2013, with over 41,000 total respondents who were primarily undergraduate students. Respondents' satisfaction and dissatisfaction were defined based on whether their perceptions met or exceeded their minimum and desired expectations. The results showed some commonalities in which dimensions had higher satisfaction and dissatisfaction levels between the European and ARL samples. Differences in satisfaction levels across user groups like undergraduates, graduates, and faculty were also examined.