これだけ … のだから ... => To this extent... N2
Emphasis on degree
~ものとおもわれる => to think; to suppose; it is believed that…; it is expected that… N1
Speculation
と言われている => it is said that ~ N3
Heard
に関わらず/に関わりなく => in spite of; regardless of ~ N2
にいわせれば => if you ask...; if one may say... N1
Base, base
ておられる => ( Honorifics) N3
Respectful, humble
... ものと考えられる => one can think that; it is conceivable that; considered ~ N2
Of course
~のは…ぐらいのものだ => only (emphasis) N1
Limit
と[言「い」]わせれば => On the view of N1
Based/focused/depending on
... のだから => Because ... N4
Cause, reason
くらいの => Approximate~ N3
Emphasis on degree
わ...わ => so much, so many N1
Exclamatory