We analyze sum rules for
the \Upsilon system with resummation of threshold effects on the
basis of the nonrelativistic Coulomb approximation.
We found the pole mass of the bottom quark m_b=4.75 \pm 0.04 GeV
and the strong coupling constant \alpha_s(M_Z)=0.118 \pm 0.006.
The origin of the contradiction between two recent estimates
obtained within the same formal framework is clarified.