from my log file, hope this helps:

performKeyEquivalent: system gave us: ⌃⌥⌘B performKeyEquivalent: user actually pressed: ⌃⌥⌘B performKeyEquivalent: match against: ⌃⎋ performKeyEquivalent: did match: NO performKeyEquivalent: system gave us: ⌘W performKeyEquivalent: user actually pressed: ⌘W performKeyEquivalent: match against: ⌃⎋ performKeyEquivalent: did match: NO performKeyEquivalent: system gave us: ⌥⌘T performKeyEquivalent: user actually pressed: ⌥⌘T performKeyEquivalent: match against: ⌃⎋ performKeyEquivalent: did match: NO performKeyEquivalent: system gave us: ↓ performKeyEquivalent: user actually pressed: ↓ performKeyEquivalent: match against: ⌃⎋ performKeyEquivalent: did match: NO