Greater Pewee field marks from established online sources

Excerpted descriptions from noted sources with my response in {italics}
Cornell Lab's 'All About Bird' webpage for this species states ,
"Adult Description
  Large, stocky flycatcher. {YES}
  Large head with slight crest. {YES, see photo below}

  Drab gray plumage. {YES, on upperparts}
  Faint wingbars. {YES}
  No eyering." >>> {YES, see photo below}

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National Audubon Society description on AudubonBirds species website:

"7-7 3/4" (18-20 cm) {?}
Large-headed flycatcher with slight crest. {YES}

Olive-brown above, slightly lighter below.  {LOOKS MORE GRAY}

Small light gray throat patch, {?}

yellow lower mandible, {YES, see photo below}

and indistinct wing bars. {Probably, see photo below}

Olive-sided Flycatcher is similar, but has olive-brown flanks, giving it a "vested" appearance. {NOT VESTED, see photo below}

Wood-pewees are smaller and lack slight crest.">> {LARGER & HAS SLIGHT CREST}
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Birds of North America online 'Distinguishing Characteristics:

"Large flycatcher, 18 cm long, mass about 27 g. {PROBABLY}

 Drab, unpatterned gray plumage, darker above, {YES}

tufted crest, {PROBABLY}

no eye ring, {YES}

and bicolored bill (blackish maxilla, yellow-orange mandible)." >>{YES}

SeEtta